64919194 has 8 divisors (see below), whose sum is σ = 97440480. Its totient is φ = 32439036.

The previous prime is 64919167. The next prime is 64919213. The reversal of 64919194 is 49191946.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 64919194.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5974 + ... + 12865.

It is an arithmetic number, because the mean of its divisors is an integer number (12180060).

Almost surely, 2^64919194 is an apocalyptic number.

64919194 is a deficient number, since it is larger than the sum of its proper divisors (32521286).

64919194 is a wasteful number, since it uses less digits than its factorization.

64919194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20564.

The product of its digits is 69984, while the sum is 43.

The square root of 64919194 is about 8057.2448144512. The cubic root of 64919194 is about 401.9058920161.

The spelling of 64919194 in words is "sixty-four million, nine hundred nineteen thousand, one hundred ninety-four".